<%@ page import="java.sql.Connection" %>
<%@ page import="java.sql.DriverManager" %>
<%@ page import="java.sql.PreparedStatement" %>
<%@ page import="java.sql.ResultSet" %>
<%@ page import="com.media.bean.UserBean" %><%--
  Created by IntelliJ IDEA.
  User: cc
  Date: 2020/10/21
  Time: 8:21
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>编辑页面</title>
    <%--引入 css文件 和 js文件--%>
    <link rel="stylesheet" href="css/bootstrap.css">

    <script src="js/jquery.min.js"></script>
    <script src="js/bootstrap.js"></script>
    <script src="js/bootstrap.bundle.js"></script>

    <style>
        .container{
            width: 50%;
            margin-top:20px;
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="row clearfix">
            <div class="col-md-12 column">
                    <h3 style="text-align: center">编辑界面</h3>
                    <form method="post" action="update.jsp">
                    <%
                        int id = Integer.parseInt(request.getParameter("id"));

                        //查询用户信息
                        //加载数据库驱动
                        Class.forName("com.mysql.jdbc.Driver");

                        //建立数据路连接
                        String url = "jdbc:mysql://localhost:3306/book";//数据库连接地址
                        Connection connection = DriverManager.getConnection(url, "root", "root");//第一个root为数据库的用户  第二个root为数据库的密码

                        String sql = "select * from user where id=?";
                        //在PreparedStatement中使用问好代替实际参数
                        PreparedStatement ps = connection.prepareStatement(sql);

                        ps.setInt(1,id);

                        ResultSet rs = ps.executeQuery();

                        while (rs.next()){
                            out.print("<input type='hidden' name='id' value="+rs.getString("id")+">");
                            out.print("用户名：<input type='text' name='username' class='form-control' value="+rs.getString("username")+"><br>");
                            out.print("密码:<input type='text' name='password' class='form-control' value="+rs.getString("password")+"><br>");
                            out.print("性别：<input type='text' name='gender' class='form-control' value="+rs.getString("gender")+"><br>");
                            out.print("年龄：<input type='text' name='age' class='form-control' value="+rs.getString("age")+"><br>");
                        }
                    %>
                    <button type="submit" style="width: 100%" class="btn btn-info">提交</button>
                </form>
            </div>
        </div>
    </div>
</body>
</html>